513940285 has 8 divisors (see below), whose sum is σ = 620657496. Its totient is φ = 408532800.

The previous prime is 513940283. The next prime is 513940309. The reversal of 513940285 is 582049315.

It can be written as a sum of positive squares in 4 ways, for example, as 13344409 + 500595876 = 3653^2 + 22374^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 513940285 - 2¹ = 513940283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513940283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326566 + ... + 328135.

It is an arithmetic number, because the mean of its divisors is an integer number (77582187).

Almost surely, 2^513940285 is an apocalyptic number.

It is an amenable number.

513940285 is a deficient number, since it is larger than the sum of its proper divisors (106717211).

513940285 is a wasteful number, since it uses less digits than its factorization.

513940285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654863.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 513940285 is about 22670.2511013884. The cubic root of 513940285 is about 801.0092912327.

The spelling of 513940285 in words is "five hundred thirteen million, nine hundred forty thousand, two hundred eighty-five".